include/linux/clkdev.h

   1 /*
   2  *  include/linux/clkdev.h
   3  *
   4  *  Copyright (C) 2008 Russell King.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Helper for the clk API to assist looking up a struct clk.
  11  */
  12 #ifndef __CLKDEV_H
  13 #define __CLKDEV_H
  14
  15 #include <asm/clkdev.h>
  16
  17 struct clk;
  18 struct device;
  19
  20 struct clk_lookup {
  21         struct list_head        node;
  22         const char              *dev_id;
  23         const char              *con_id;
  24         struct clk              *clk;
  25         struct clk_hw           *clk_hw;
  26 };
  27
  28 #define CLKDEV_INIT(d, n, c)    \
  29         {                       \
  30                 .dev_id = d,    \
  31                 .con_id = n,    \
  32                 .clk = c,       \
  33         }
  34
  35 struct clk_lookup *clkdev_alloc(struct clk *clk, const char *con_id,
  36         const char *dev_fmt, ...) __printf(3, 4);
  37
  38 void clkdev_add(struct clk_lookup *cl);
  39 void clkdev_drop(struct clk_lookup *cl);
  40
  41 struct clk_lookup *clkdev_create(struct clk *clk, const char *con_id,
  42         const char *dev_fmt, ...) __printf(3, 4);
  43
  44 void clkdev_add_table(struct clk_lookup *, size_t);
  45 int clk_add_alias(const char *, const char *, const char *, struct device *);
  46
  47 int clk_register_clkdev(struct clk *, const char *, const char *);
  48 int clk_register_clkdevs(struct clk *, struct clk_lookup *, size_t);
  49
  50 #ifdef CONFIG_COMMON_CLK
  51 int __clk_get(struct clk *clk);
  52 void __clk_put(struct clk *clk);
  53 #endif
  54
  55 #endif